:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #243041;
  --muted: #6f7b8a;
  --line: #e5e9f0;
  --primary: #2b6cb0;
  --primary-2: #1f4f84;
  --danger: #dc2626;
  --warning: #d97706;
  --success: #16a34a;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #17212f;
  color: #fff;
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
  padding: 10px;
  border-radius: 16px;
  background: rgba(255,255,255,.06);
}

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 700;
  background: linear-gradient(135deg, #2b6cb0, #4c8ad6);
}

.brand h1 {
  font-size: 16px;
  margin: 0;
  line-height: 1.2;
}

.brand p {
  margin: 4px 0 0;
  color: rgba(255,255,255,.75);
  font-size: 12px;
}

.menu-title {
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(255,255,255,.55);
  margin: 18px 10px 10px;
  text-transform: uppercase;
}

.nav-btn {
  width: 100%;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: #fff;
  background: transparent;
  padding: 13px 14px;
  border-radius: 14px;
  margin-bottom: 8px;
  font-size: 14px;
  transition: .2s ease;
}

.nav-btn:hover,
.nav-btn.active {
  background: rgba(43,108,176,.28);
}

.content {
  padding: 24px;
  overflow-x: hidden;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.topbar h2 {
  margin: 0;
  font-size: 28px;
}

.topbar p {
  margin: 6px 0 0;
  color: var(--muted);
}

.badge {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
  box-shadow: var(--shadow);
}

.view { display: none; }
.view.active { display: block; }

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.metric {
  font-size: 30px;
  font-weight: 700;
  margin: 10px 0 4px;
}

.muted { color: var(--muted); }

.grid-2 {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.section-title h3 {
  margin: 0;
  font-size: 18px;
}

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

input, select, textarea, button {
  font: inherit;
}

.input, .select, .textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  background: #fff;
  outline: none;
}

.textarea {
  min-height: 90px;
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.form-grid .full { grid-column: 1 / -1; }
.form-grid .span-2 { grid-column: span 2; }

.btn {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}

.btn:hover { background: var(--primary-2); }
.btn.secondary { background: #e9f1fb; color: var(--primary); }
.btn.success { background: var(--success); }

.table-wrap {
  width: 100%;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
  background: #fff;
}

th, td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

th {
  background: #f8fafc;
  position: sticky;
  top: 0;
  z-index: 1;
}

.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 700;
}

.pill.success { background: #dcfce7; color: #166534; }
.pill.warning { background: #fef3c7; color: #92400e; }
.pill.danger { background: #fee2e2; color: #991b1b; }
.pill.info { background: #dbeafe; color: #1d4ed8; }

.empty {
  padding: 30px;
  text-align: center;
  color: var(--muted);
}

.scanner-box {
  display: none;
  margin-top: 16px;
  padding: 16px;
  border-radius: 18px;
  border: 1px dashed var(--line);
  background: #f8fafc;
}

.scanner-box.active { display: block; }

#reader-ingreso,
#reader-salida,
#reader-producto {
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
}

.search-box {
  display: grid;
  grid-template-columns: 1fr 220px 160px;
  gap: 12px;
  margin-bottom: 16px;
}

.mobile-toggle {
  display: none;
  margin-bottom: 14px;
}

.footer-note {
  margin-top: 16px;
  font-size: 12px;
  color: rgba(255,255,255,.65);
}

@media (max-width: 1200px) {
  .cards, .form-grid, .grid-3, .search-box {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    left: -300px;
    width: 280px;
    z-index: 20;
    transition: .25s ease;
  }

  .sidebar.open {
    left: 0;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .cards, .form-grid, .grid-3, .search-box {
    grid-template-columns: 1fr;
  }

  .content {
    padding: 18px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
}